Because there is a cost to these tasks ! also the disposal of them RFDs need paying for thier time and costs . Its easy to cut shotshell cases at the rear and remove the wad and shot the powder can be simply burned , the only issue is the primer but those could be popped in the gun .
There’s no “task”.
Are you expecting something to happen other than the cartridges being dropped in a box with all the other unwanted odd cartridges a gun-shop accumulates, to be eventually given to someone who’s got the time & interest to salvage the shot - or forgotten about entirely?
Personally I’d just cut them up & pop the primer but the OP seemed reluctant to do that hence he floated the RFD or Police options, the latter of which I’d suggest is unwise.


